package controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import pojo.Student;
import service.StudentService;
import utils.Page;

import java.util.List;

@Controller
@RequestMapping("/student")
public class StudentController {
    @Autowired
    private StudentService studentService;
    @RequestMapping("/list/{currentPage}")
    public String list(Student student, @PathVariable("currentPage") Integer currentPage, Model model ){
        // 查询数据并设置分页
        Page page = new Page();
        int totalCount = studentService.count(student);  // 根据传递的条件进行计数
        page.setTotalCount(totalCount);
        page.setCurrentPage(currentPage);
        page.setTotalPage();

        // 计算偏移量
        int offset = (currentPage - 1) * page.getPageSize();
        List<Student> students = studentService.findAll(student, offset, page.getPageSize());

        // 将查询结果添加到模型中
        model.addAttribute("students", students);
        model.addAttribute("page", page);
        model.addAttribute("condition", student);  // 查询条件保留在页面上

        return "student/list"; //

    }

    @RequestMapping("/toadd")
    public String toAdd(){

        return "student/add";
    }
    @RequestMapping("/addSave")
    public String addSave(Student student){
        int result = studentService.addStudent(student);
        if (result>0){
            return "redirect:/student/list/1";
        }else {
            return "error";
        }
    }

    @RequestMapping("/delete/{sId}")
    public String delete(@PathVariable("sId") Integer sId){
        int result = studentService.deleteStudentById(sId);
        if (result>0){
            return "redirect:/student/list/1";
        }else {
            return "error";
        }
    }

    @RequestMapping("/toupdate/{sId}")
    public String toUpdate(@PathVariable("sId") Integer sId,Model model){
        Student student = studentService.findStudentById(sId);
        model.addAttribute("student",studentService.findStudentById(sId));
        return "student/update";

    }

    @RequestMapping("/updateSave")
    public String updateSave(Student student){
        int result = studentService.updateStudent(student);
        if (result>0){
            return "redirect:/student/list/1";
        }else {
            return "error";
        }
    }
}
